Run: 2026-05-20-01KS25X1T972STE9Q6DWJBSM3Z

Run Details

Duration:
1.6s
Cost:
$0.001272
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
60.65% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The grandfather clock struck midnight, sending a shiver through the quiet library where the wealthy old man lay motionless. Cold rain lashed violently against the tall glass windows while a single candle flickered on the polished mahogany desk. Sir Reginald sat frozen in his favorite leather armchair, his eyes staring blankly at the ornate, high ceiling above. A dark, sticky pool of fresh blood slowly pooled on the Persian rug beneath his dangling, lifeless left hand. Then, the heavy oak door creaked open, revealing a shadowed figure holding a tarnished silver key in their hand. No one in the grand manor heard the soft footsteps that escaped into the foggy, silent night quite undetected.
created_at"2026-05-20T07:51:46.254Z" 5/20/2026, 7:51:46 AM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency729
moderation_latency(null)
generation_time1507
tokens_prompt46
tokens_completion176
native_tokens_prompt38
native_tokens_completion135
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"STOP"
service_tier"standard"
usage0.001272
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"EmgNatS3GOWqjMcP9s36wAE"
is_byokfalse
latency728
model_permaslug"google/gemini-3.5-flash-20260519"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer(null)
request_id"req-1779263506-jxG8Sy6mvdnYGDv9ZVU1"
session_id(null)
api_type"completions"
id"gen-1779263506-4z18VEl2l9cH0quLYywx"
upstream_id"EmgNatS3GOWqjMcP9s36wAE"
total_cost0.001272
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
60.65% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
019
119
219
319
419
519